She was built and arrived at the railway in 1969. In Storm Damage, she helps the other engines clean up the mess the storm from the previous night had caused, and helped Atlas out of the old mill after it's destruction. During said storm, Rex didn't know where she was, due to her schedule being mostly goods extras.
Her faces are based on that of Daisy's from the TV series.
Sigrid of Arlesdale is based off the Ravenglass and Eskdale Railway's Shelagh of Eskdale.
- Sigrid's model was released on December 1st 2015 as part of an 'Advent Calendar' style release system on Sodor Workshops. WildNorWester received a pre-release version though, hence her appearance in Food For Thought.